function postcall( url, params, target){
    var tempform = document.createElement("form");
    tempform.action = url;
    tempform.method = "post";
    tempform.style.display="none";
    if(target) {
        tempform.target = target;
    }

    for (var x in params) {
        var opt = document.createElement("input");
        opt.name = x;
        opt.value = params[x];
        tempform.appendChild(opt);
    }

    var opt = document.createElement("input");
    opt.type = "submit";
    tempform.appendChild(opt);
    document.body.appendChild(tempform);
    tempform.submit();
    document.body.removeChild(tempform);
}

//跳转url
function go_url(url, parameter)
{
    if(url != '#'){
        window.location.href = url + parameter;
    }
}